Tutorial by Examples: ed

To sort this table Employee by department, you would use ORDER BY Department. However, if you want a different sort order that is not alphabetical, you have to map the Department values into different values that sort correctly; this can be done with a CASE expression: NameDepartmentHasanITYusufHR...

This example will guide you how to get playlist data using the YouTube Data API on Android. SHA-1 fingerprint First you need to get an SHA-1 fingerprint for your machine. There are various methods for retrieving it. You can choose any method provided in this Q&A. Google API console and YouTub...

Setup To start unit testing your Android project using JUnit you need to add the JUnit dependency to your project and you need to create a test source-set which is going to contain the source code for the unit tests. Projects created with Android Studio often already include the JUnit dependency an...

Where we came from Sometimes we can't provide all of the required metadata needed for the XmlSerializer framework in attribute. Suppose we have a base class of serialized objects, and some of the derived classes are unknown to the base class. We can't place an attribute for all of the classes which...

Redis has a Windows port provided by 'Microsoft Open Technologies'. You can use the msi installer found on: https://github.com/MSOpenTech/redis/releases After installation completes you can see 'Redis' is a Windows service (and it's status should be "Started") To write an 'Hello world'...

Scatterplot You have two vectors and you want to plot them. x_values <- rnorm(n = 20 , mean = 5 , sd = 8) #20 values generated from Normal(5,8) y_values <- rbeta(n = 20 , shape1 = 500 , shape2 = 10) #20 values generated from Beta(500,10) If you want to make a plot which has the y_val...

This is not something you will see in other programming environments. I came across it some years back and I couldn't understand why it was happening, but after working with MATLAB for some time I was able to figure it out. Look at the code snippet below: for x = 1:10 for x = 1:10 fpr...

set clipboard=unnamed This makes it possible to copy/paste between Vim and the system clipboard without specifying any special register. yy yanks the current line into the system clipboard p pastes the content of the system clipboard into Vim This only works if your Vim installation has cli...

Weighted Job Scheduling Algorithm can also be denoted as Weighted Activity Selection Algorithm. The problem is, given certain jobs with their start time and end time, and a profit you make when you finish the job, what is the maximum profit you can make given no two jobs can be executed in parallel...

Problem ConcurrentDictionary shines when it comes to instantly returning of existing keys from cache, mostly lock free, and contending on a granular level. But what if the object creation is really expensive, outweighing the cost of context switching, and some cache misses occur? If the same key ...

int x, y; bool ready = false; void init() { x = 2; y = 3; ready = true; } void use() { if (ready) std::cout << x + y; } One thread calls the init() function while another thread (or signal handler) calls the use() function. One might expect that the use() function ...

The IE=Edge meta tag is for telling the destination rendering engine to use the latest (edge) version of IE rendering engine, which enables responsive behavior in Windows phones. <meta http-equiv="X-UA-Compatible" content="IE=edge"> Occasionally this breaks images in Li...

Most Rx operators take an optional scheduler on which to schedule their future iterations. If not supplied they will use their default configured scheduler. Supplying a scheduler can be useful for testing purposes in which we like to talk about virtual time instead of real time for speed of test exe...

Create a folder where you would like to have your game live, and move into that mkdir my-new-game cd my-new-game Initialize the directory using npm. npm init -y Install phaser as a node package. npm install phaser Install http-server as a global module, to be used on the...

We have a set of jobs J={a,b,c,d,e,f,g}. Let j in J be a job than its start at sj and ends at fj. Two jobs are compatible if they don't overlap. A picture as example: The goal is to find the maximum subset of mutually compatible jobs. There are several greedy approaches for this problem: Earli...

Open a raster that covers the globe and extract a subset of the raster. import gdal # Path to a tiff file covering the globe # http://visibleearth.nasa.gov/view.php?id=57752 tif_name = "/path_name/land_shallow_topo_21600.tif" # Open raster in read only mode ds = gdal.Open(tif_n...

In order to create a scheduler,the entry needs to be created in liferay-portlet.xml provding scheduler class and trigger value for timing of scheduler triggering <portlet-name>GetSetGo</portlet-name> <icon>/icon.png</icon> <scheduler-entry> ...

Computed properties will automatically be recomputed whenever any data on which the computation depends changes. However, if you need to manually change a computed property, Vue allows you to create a setter method to do this: Template (from the basic example above): <div id="example"...

This tag is a duplicate of playframework. Please post any content that you would post here in that tag, with the version set to “2.0”

You can also use this code to setup an LED with a button switch with a pull up resistor, this could preferably be with the next step after setting up the intial LED controller int buttonState = 0; // variable for reading the pushbutton status void setup() { // initialize the LED pin as an ...